What it is
Trimyristin is a triglyceride formed from glycerin and three molecules of myristic acid, a saturated C14 fatty acid. In cosmetics it acts as an emollient that softens skin and as a structuring lipid that helps thicken or firm up oil phases in sticks and balms. It contributes body and a smooth feel to anhydrous and oil-rich formulas.
Safety & warnings
Trimyristin is generally well tolerated as a skin emollient. Because it is a myristic-acid based lipid, it may have comedogenic potential and could contribute to clogged pores in acne-prone skin. It is not a recognized fragrance allergen.
Origin & sourcing
It occurs naturally in fats and oils such as nutmeg butter and coconut oil and can also be produced by esterifying glycerin with myristic acid.
Questions everyone asks
What is trimyristin made of?
It is a triglyceride of glycerin and three myristic acid units, a saturated C14 fatty acid found in sources like nutmeg butter and coconut oil.
Can it clog pores?
As a myristic-acid based lipid it may have comedogenic potential, so acne-prone users may want to monitor how their skin reacts.